general

strategy

Decapitate 40 gladiators: Always go against the same team, damages and order of critical hits will be roughly the same, so after a few battles the decapitating strokes are predictable.

As you can see, the last goal is kill 20 times the contenders. Each team of contenders is stronger than the previous one. When you reach the last ones, they have impossible stats: They cheat!
Just to give you an idea, their DWS do 4 crits of more than 1000 damage which would require at least 300 dex and 450 strengh, and this is not possible.